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main.go
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main.go
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// Copyright 2017 Google Inc. All rights reserved.
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to writing, software distributed
// under the License is distributed on a "AS IS" BASIS, WITHOUT WARRANTIES OR
// CONDITIONS OF ANY KIND, either express or implied.
//
// See the License for the specific language governing permissions and
// limitations under the License.
package main
import (
"flag"
"fmt"
"io/ioutil"
"net"
"os/exec"
"github.com/sirupsen/logrus"
pb "github.com/campoy/justforfunc/12-say-grpc/api"
"golang.org/x/net/context"
"google.golang.org/grpc"
)
func main() {
port := flag.Int("p", 8080, "port to listen to")
flag.Parse()
logrus.Infof("listening to port %d", *port)
lis, err := net.Listen("tcp", fmt.Sprintf(":%d", *port))
if err != nil {
logrus.Fatalf("could not listen to port %d: %v", *port, err)
}
s := grpc.NewServer()
pb.RegisterTextToSpeechServer(s, server{})
err = s.Serve(lis)
if err != nil {
logrus.Fatalf("could not serve: %v", err)
}
}
type server struct{}
func (server) Say(ctx context.Context, text *pb.Text) (*pb.Speech, error) {
f, err := ioutil.TempFile("", "")
if err != nil {
return nil, fmt.Errorf("could not create tmp file: %v", err)
}
if err := f.Close(); err != nil {
return nil, fmt.Errorf("could not close %s: %v", f.Name(), err)
}
cmd := exec.Command("flite", "-t", text.Text, "-o", f.Name())
if data, err := cmd.CombinedOutput(); err != nil {
return nil, fmt.Errorf("flite failed: %s", data)
}
data, err := ioutil.ReadFile(f.Name())
if err != nil {
return nil, fmt.Errorf("could not read tmp file: %v", err)
}
return &pb.Speech{Audio: data}, nil
}